Refkigekator



TOUGH & CRADDOCK.,

Refrigerator. No. 5,471. Patented March 14, 1848..

\ II IA VIII'IIIIIIIIIIIIIIIIII/Ih JOHN S. TOUGH AND JOSEPH T. ORADDOGK, OF BALTIMORE, MARYLAND.

REFRIGERATOR.

Specification of Letters Patent No. 5,471, dated March 14, 1848.

To all whom it may concern:

Be it known that we, JOHN S. TOUGH and JOSEPH T. ORADDocx, of the city of Baltimore and State of Maryland, have invented new and useful Improvements in Refrigerators, and that the following is a full, clear, and exact description of the principle or character which distinguishes them from all other things before known and of the manner of making, constructing, and using the same,.reference being had to the accompanying drawings, making part of this specification, in which- Figure 1 is an isometrical View of the ap paratus; Fig. 2, a vertical section; Fig. 3, a section showing the valve covering the openings between the refrigerator and cold air chamber.

The same letters indicate like parts in all the figures.

The nature of our invention consists in forming a chamber in connection with the refrigerator in which the air surrounds a vessel filled with ice water for the purpose of reducing the tenflmrature of the air within both the chamber and refrigerator, the communication bet-ween the two being cut off when the door of the refrigerator is opened.

Various modifications and forms of apparatus can be made to suit the taste or con venience of the purchaser. The one which we have adopted in the drawings is perhaps as convenient as any for illustration.

It consists of an oblong box supported on proper feet the lower part of it is lined with any non-conductor of heat say soap stone which we prefer. This lower part (a) forms a refrigerator having a door (6) in front opening into it; above this compartment there is another (0) which we denominate the cold air chamber which is also lined with a non-conductor; within this chamber there is a vessel ((Z) of ice water entirely surrounded by air except the opening (6) by which it is filled and which is closed tight by a cover of non conducting material. A communication is formed between the re frigerator and the cold air chamber which we cover with a valve of any convenient construction. That which we have adopted is a common lattice valve as shown at Fig. 3; a spring (it) behind it closes it and it is opened by means of a rod (2') that projects out through the front of the box over' the door of the refrigerator; this door has a small piece (70) attached to it standing up from its upper edge -so that when the door is closed it pushes in the rod and thus opens the communication between the refrigerator and air chamber, but when the door is opened the rod is relieved and the spring (h) closes the valve. Thus it will be perceived when closed up the cold air from the air chamber descends and cools the refrigerator, and when the door is open the air chamber is closed thus preventing the waste of ice. The water vessel has a pipe (7%) leading from its bottom out through the side with a stop thereon for drawing oif the ice water.

hat we claim as our invention and desire to secure by Letters Patent is- 1. An air chamber surrounding the reservoir containing the ice and water and connected with the refrigerator by a lattice or other opening, substantially in the manner and for the purpose described.

2. e also claim connecting the valve which closes the communication between the air chamber and the refrigerator with the door of the refrigerator as described so that the valve may be closed while the door is open, and vice versa, as herein set forth.

JOHN S. TOUGH.

JOSEPH T. CRADDOCK.

Vitnesses BENJ. T. DALEY, GEO. DOBLER. 

